2529128457 has 6 divisors (see below), whose sum is σ = 3653185562. Its totient is φ = 1686085632.

The previous prime is 2529128447. The next prime is 2529128467. The reversal of 2529128457 is 7548219252.

2529128457 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2529128447) and next prime (2529128467).

It can be written as a sum of positive squares in only one way, i.e., 2330572176 + 198556281 = 48276^2 + 14091^2 .

It is not a de Polignac number, because 2529128457 - 2³⁰ = 1455386633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2529128447) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 140507128 + ... + 140507145.

Almost surely, 2^2529128457 is an apocalyptic number.

It is an amenable number.

2529128457 is a deficient number, since it is larger than the sum of its proper divisors (1124057105).

2529128457 is a wasteful number, since it uses less digits than its factorization.

2529128457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281014279 (or 281014276 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 2529128457 is about 50290.4410101960. The cubic root of 2529128457 is about 1362.4595876351.

The spelling of 2529128457 in words is "two billion, five hundred twenty-nine million, one hundred twenty-eight thousand, four hundred fifty-seven".